Previous research has paid little attention to the role of kinship in understanding the specific profiles of complicated grief (CG) reactions. To address this under-investigated topic, the Inventory of Complicated Grief was used in five groups of bereaved participants (N = 1,105) that differed in their family relationship with the deceased (child, spouse/romantic partner, sibling, parent, and grand-parent). Results identified kinship relationship as the variable that predicted the highest amount of variance in the intensity of CG (Standardized β = -.55), above other predictors such as gender, time since loss or circumstances of death. More importantly, distinct profiles of CG reactions were found depending on kinship. These results highlight kinship as a major predictor of CG and open a new line of research that serves to clarify the role of kinship along with other risk factors.